Drain Level Above Limit - Daikin VRV IV-S RXTQ-TAVJU Series Service Manual

SiUS331604E

4.10 Drain Level Above Limit

AF
Error Code
Applicable
FXFQ, FXZQ, FXDQ, FXMQ
Models
Method of Error Water leakage is detected based on float switch ON/OFF operation while the compressor is not in
Detection operation.
Error Decision When the float switch changes from ON to OFF while the compressor is not in operation.
∗ Error code is displayed but the system operates continuously.
Conditions
Supposed
Causes
Troubleshooting
Service Diagnosis
Humidifier unit (optional accessory) leaking
Defective drain piping (upward slope, etc.)
Defective indoor unit main PCB
Be sure to turn off the power switch before connecting or disconnecting
Caution connectors, or parts may be damaged.
Field drain
piping has a defect such
as upward sloping.
NO
A
humidifier unit
(optional accessory) is installed
on the indoor unit.
NO
YES
YES
Troubleshooting by Error Code
Modify the drain piping.
Check if the humidifier unit is
leaking.
Defective indoor unit main
PCB (A1P).
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